Domain, Range, Evaluate Function Notation

If f(x)=2x+1, what would be your first step to find f(1)?

• plug a 1 in for all the x's

• only plug a 1 into the left side

• set the function equal to 1

• only plug a 1 into the right side

If f(x)=2x+1, what would the function look like once you substitute in a 1 to find f(1)?

• f(x)=21+1

• f(x)=2x(1)+1

• f(x)=2(1)+1

If f(x)=-3x-8, find f(-1)

• f(-1)=5

• f(-1)= -12

• f(-1)= -5

• f(-1)= -10

g(x)=3x+1

g(2)=_______

• 6

• 7

• 8

• 9

Consider the function:{(3,11),(4,18),(5,27),(6,38)}  What is the Range?

• {4,11,5,18}

• {3,11,4,18}

• {3,4,5,6}

• {11,18,27,38}

Evaluate the function, f(x)=2x, when x=4.

• f(4) = 4

• f(4) = 2

• f(4) = 6

• f(4) = 8

Evaluate the function, f(x)=1/3x + 6, when x=3.

• y = 7

• y = 9

• y = 2

• y = 7/3

Is this mapping a function or not a function? 

• Function

• Not a Function 

What is f(1)?

• 1

• 5

• 0

• 4

All of the y values or outputs are called what?

• Domain

• Range

• Relation

• Function